Improvement in liquid-meters



HENRY C. SERGEANT.

` lmprovementin Liquid-Meters. N0. 114,480. Patented`May2,1871.

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HENRY O. SERGEANT, OF NEWARK, NEW JERSEY,ASSIGN.OR TO JOSE E.

' DE NAVARRO, OF NEW YORK OITY.

Letters Patent No. 114,480, dated May 2, 1871.

IMPROVEMENT IN LIQUIDI-METERS.

The Schedule referred to in these Letters Patent and making part of the same.

Tclail whom .ttmay concern Be .it known that I, HENRY C. SERGEANT, of the -cty ci Newark; in the county of Essex and State ci' lclare that the following is a full, clear, and exact description of the same, reference being had to the ac= ccmpanying drawing forming part of this specification, and in which Figure 1 represents a plan of a meter constructed in accordance with my improvement, with a valvebox or chamber that serves to receive the incoming liquid removed;

Figure 2 is a similar view, in part, with the valve removed; A

Figure 3, a longitudinal section through the meter, taken mainly as indicated by the line x x in lig. 1 g and lFigure 4, a transverse section through the line yy. Figure 5 is an under or face view or" the valve'with gear-wheel attached, by which it is operated. i

Similar letters of reference indicate corresponding parte throughout the several gures. v

My invention relates to meters which employ two or more-reciprocating pistons, arranged to work inadl jacent cylinders, said cylinders, of which it is proposed to use two, preferably, being disposed side by sidegaaid the motions oi the pistons in them being controlled by a revolving valve driven by the pistons.

While such is the general description of meter to which my invention relates, it is more particularly designed to be applied to meters constructed substantially as described in LettersPatent of the United States, No. 106,878, issued to William Tobin, as assignee of myself, August 30, A. D. 1870, so far, atl least, as regards the connection of the pistons with separate revolving crank-shafts, and the gearing of the latter together, to work in timely relation with, al-

though independently of one another;.but in my present invention an intermediate gear-wheel or wheels is or are used in establishing the connection of the two crank-shafts, and such intermediate gear is further Vemployed to revolve the valve, by which the motions of thepistons are controlled and a leading feature of my invention consists inay peculiar construction of the revolving valve and arrangement of its ports and passages over which it travels, whereby I am enabled to rotate the valve only once to two revolutions of the crank-shafts, which4 are operated by the pistons, and the cranks of which are set at right angles to each other or thereabont.

In the accompanying drawing- A represents the outer case of the meter closed at its ends,and formed with an exhaust-passage, B, extending across it between the cylinders C O' and the valve-boxer chamber D for the incoming liquid.

The case A is also divided longitudinally by a web or webs, or otherwise, to prevent the liquid passing fromone cylinder to the other. Said cylinders, which are preferably left open at their ends, may be composed of light metal tubes inserted loosely within cylindrical chambers in the case, and with which they are united or secured to their places by brimstone introduced in ailuid state between theV tubes and walls of the chambers which receive them'l This mode of securing the tubes allows of after chipping or ttingwithout breaking the setting or disturbing the parts thus united, and, consequently, s superior in this respect to'xing the tubes by hydraulic cement.

E Eare the pistons, which are connected by pitmen or otherwise, respectively, with separate crank-shafts F F', that project up-through suitable boxes or bearings into the chamber D, and that are caused to re volve by the pistons. o

These shafts have arranged on their upper or outer ends spur-wheels G G', which are yconnected by intermediate gear; as, for instance, by a single third wheel, H, which is proportioned to make but one revolution for every two rotations of the crank-shafts, and which, in addition to its function of coupling the crank-shafts to work in unison and steadying, as an intermediate device, the run of the gears G G', also answers to rotate the valve I.

This valve I may be of a disk construction, and be made of one and the same piece with 4the spur-wheel H, which is the construction here shown, the valve, by thearrangement of teeth around its periphery, forming the wheel. Y

Said valve has two oppositely-arran'ged ports, b b', through it, and two intermediately-arranged opposite cavities, c c', uniting in a common and connecting eX- hanst-cavity, which in its turn is in communication with a central exhaust-passage, formed by the hollow shaft e of the valve, that rotates within a sleeve or bearing, f, and that is in open connection with the general exhaust-passage, B.

The valve-scat J has a corresponding number of ports or passageslthrough it, but difierently arranged to the ports and cavities in the valve.

Thus it has two closely-arranged ports, g g', arranged to connect respectively by passages l1l h with the same ends ofthe two cylinders,C O', and two more distantly-arranged ports, lc It', arranged to connect respectlively by passages l l' with the two cylinders at their opposite ends. (See figs. 2 and 3.)

By this construction of the valve and arrangement of its ports and cavities relatively with the ports in the valve-seat, through which the liquid both enters and discharges, I am enabled to revolve the metershafts only twice for every one revolution of the valve,

and yet mantain'a proper opening and closing of the ports to keep up a reciprocating action of the pistons, with their cranks arranged at right angles to each other.

Motion for operating the registering mechanism may be taken from the revolving valve or in any other suitable Ianner. I

What is here claimed, and desired to be secured 'by Letters Patent, is- Y 1. The combination of the intermediate gear H with the gear-wheels G G', crank-shafts F F', and pistons E E of he meter, substantially as specified.

2. The revolving valve I, with its ports b b and exhaust-cavities c'c, in combination with the valve-seat J, having its ports g g and la k" arranged in relation with each other and with the ends of the cylinders to which they respectively'belong, essentially vas -shown and described.

3, The combination with the separate crank-shafts F F', having their cranks at right angles,.or there. about, of a valve for controlling the motions of the pistons, byv which said shafts are driven, constructed to 5. The arrangement of the exhaust-passage B, the. hollow valvefshaft e, the cylinders C O', and the inlet` chamber or valve-boXrD, substantially as specified.

v HENRY C. SERGEAN T. Witnesses: Y

FRED. HAYNns,

` R. E. RABEAU. 

